- State Road 112/Airport Expressway
- State Road 836/Dolphin Expressway
- State Road 874/Don Shula Expressway
- State Road 878/Snapper Creek Expressway
- State Road 924/Gratigny Parkway
History of MDX
The Miami-Dade Expressway Authority was created in December 1994, by the Miami-Dade County Commission to establish local control of toll revenues and to ease traffic congestion on five major roadways in Miami-Dade County. With the passage of Florida legislation in December 1996, MDX took over operational and financial control of five of the busiest roadways in Miami-Dade County.
MDX's five roadways cover more than 31 center-lane miles and are the most critical east-west roadways in the county.
Paving the Way for Miami-Dade's Roadways
Since becoming operational in January 1997, MDX has been tasked with maintaining, operating and enhancing its expressway system with the funds generated from tolls collected on its roadways. MDX does not receive money from gasoline taxes or other tax revenues; in fact, more than 95 percent of its revenue comes from the tolls collected on the five roadways. All tolls are fully dedicated to transportation enhancement projects in Miami-Dade County.
As of June 2011, MDX has:
- Invested over $740 million in completed projects and another $480 million in ongoing projects
- Contributed over $400 million toward joint construction projects with other state and local governmental agencies
- Programmed to invest over $360 million toward projects in the upcoming five years
- Resurfaced most of the MDX System
- Performed system-wide bridge upgrades
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